Clip for fireproof construction.



J. F. MAKOW SKI. CLIP FOB. FIREPROOB CONSTRUCTION.

APPLIOATIOKIILED FEB-14, 1908:

Patented May 28, 1912.

mama's/Gr;

2o invention will hereinafter appear.

- UNITED ST TES PATENT OFFICE.

JOHN F. MAKOWSKI, or SAN FRANCISCO, CALIFORNIA, ASSIGNOR}, To THE ROEBLING CONSTRUCTION COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION .OF

NEW JERSEY.

l To all whom it may 007lC67i7L.

Be it known that I, JOHN F. MAKOWSKI, citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Clips for Fireproof Construction, of which the following is a specification.

Mycinvent-ion relates to a combined clip and studding elementfor use in fire-proof partitions and the like.

The object of this invention is to. provide a cheap, simple, and practical clip for bonding channel bars together in a partition or like structure, and particularly to provide a clip which is economical to manufacture, in the matter of the saving of material, and in the ease with which the clips may be stamped out from blank stock.

Further objects and advantages of the The invention consists of the parts am the construction and combination of parts. as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1 is a perspective view of the device. Fig. 2 shows the'blank. Fig. 3 is an end view of the clip. Fig. 4 is a front view of the clip. Fig. 5 is a View similar to Fig. 1,'showing a modification.

In the manufacture of the present improved clip, I take a bendable metallic strip of suitable width and thickness and of any" length, z-nd from this strip stamp out, by appropriate means, the sections A, which form the. blanks of my improved clip.

The essential feature ofeutti'ng out these clip sections is that they are severed on zigzag lines 2 running crosswise of the strip. The length of these sections depends on the size and length of the clip ,desired, and the character of the partition is to be used.

The'cutting of the sections on the zigzag lines, as shown, produces the triangular prongs or tang-s1 3, 3. in stamping out these clips from a continuous strip without waste, the prongs are necessarily ditt'erent in which the clip.

in number and character at the adjacent;

ends offsiuzcessive clips, so that the prongs 1011 one clip are formed troni the material between the prongs et' ihe ad acent end oi:

stamfi'e7lffrom a continuous strip with out the next clip. Whenihc fllpSJll'C thus CLIP FOR FIREPROOF CONSTRUCTION.

Specification of Letters Patent. t t May 23,1912, Application filed February 14, 1908. Serial No. 415,899.

waste, and the successive clips are duplicates of each other, which is preferable, the

the other; thetvi'o outside prongs at the l'atter end being equal in base width and. (plan tity of material to the central prong. Thus, although the number-of prongs at either end? of a clip differs from the number of prongs at the opposite end of the same clip, still there is quantitatively the same amount of material in the prongs at each end, so that the strength of the prongs at each. end is the. same;'and these prongs, when folded up to embrace the channels -so that there' is-no chance of'the turning or loosening .of the clip, or pulling it off from the channels. At suitable. iute. i"\.'als between the terminal prongs 3, 3', are stamped out the triangular 7E; embrace the Cl'ltll1l1tlS 4, will have a sub stantial bearing against the channels and bendable, insideprongs 5.; these prongs be-'- ing arranged alongside of each other where the clip is short, as in Figs. l'to 4,.or ar-.- ranged in line, where a longer clip-1s made as shown in Fig.5. In either case, the base of the inside prongs or tangs 5 being disposed toward the base end of the terminal prongs'3, -23, the tangs or prongs 5 when' bent more or less nearly at right angles-to the plane of the bodyof the clip, will stand parallel withthe eorre-spom'lingly bent 'terminal prongs or tangs 3', and the channel bars-4 will be adapted to be reeeiiwedbetween each set of terminal ta'ngs' or prongs 3, 3', and thtll' opposed nsideprongs 5.

The clips are held in place by placing-the clipiagainst the backs of two properly .set up channels 4-, with the inside prongs 5 phssing between the ehann'elsyand then bending the pointed, ends of the several prongs 3, 3'-!) over the edges of the outside and' inside. flanges of the channel bars and clenching them. This serves, to securely interlock the channel arstoform the studding.

lee

. The makingof the several prongs 3, 35

triangular, as hcre'shown, is advantagemls for a variety of reasons: First, as before stated,-it permits of a saving of material,

because a strip of metal can be cut up without any waste, and in the cutting, thebendany width of clip.

able terminal tangs 3, 3 will be formed. Secondly, the use of the triangular form of prongs or tangs permits of the easyconstruction of a die for cutting out the blank sections, because this die may be made in separable triangular sections adaptable for Thirdly, the pointed form of prongs or tangs 3, 35 permits the points to-be easily closed inand curled or clenched over the flanges of the channels,

and give a snug tight grip o-nthe channels.

Having thus described my inventioinwhat I claim and desire to secure by Letters Patent is 1. A studding element consisting of a pair a of channel bars suitably spaced, the bars being in edgewise alinement, and an interlocking clip connecting the bars and composed of a plate engaging the flat side of the bars and having triangular shaped terminal prongs bent to engage the outer flanges of the bars, and said plate having also intermediate triangular prongs or tangs bent to engage the inner flanges of said bars, and

said inside prongs being struck from, the

portion of the plate between the bars.

'2.'A channel bar interlocking clip consisting of a plate having terminal triangular, bendable prongs and intermediate trian ular prongs formed by punching out the .cexi tral portion of the plate, and bendable toward their adjacent opposed terminal prongs.

3. A channel bar interlocking clip having triangular bendable prongs at each end, the

prongs at one end corresponding in size and JOHN F. MAKOWSKI.

Witnesses:

G. A. RUrrELn, Percy R. STUART. 

